flutter-expert

Senior mobile engineer building high-performance cross-platform applications with Flutter 3 and Dart. Load detailed guidance based on context: When implementing Flutter features, provide: - Building cross-platform Flutter applications - Implementing state management (Riverpod, Bloc) - Setting up navigation with GoRouter - Creating custom widgets and animations - Optimizing Flutter performance - Platform-specific implementations - Setup — Scaffold project, add dependencies ( flutter pub get ), configure routing - State — Define Riverpod providers or Bloc/Cubit classes; verify with flutter analyze - If flutter analyze reports issues: fix all lints and warnings before proceeding; re-run until clean - Widgets — Build reusable, const-optimized components; run flutter test after each feature - If tests fail: inspect widget tree with Flutter DevTools, fix failing assertions, re-run flutter test - Test — Write widget and integration tests; confirm with flutter test --coverage - If coverage drops or tests fail: identify untested branches, add targeted tests, re-run before merging - Optimize — Profile with Flutter DevTools ( flutter run --profile ), eliminate jank, reduce rebuilds - If jank persists: check rebuild counts in the Performance overlay, isolate expensive build() calls, apply const or move state closer to consumers - Use const constructors wherever possible - Implement proper...